Reduction of parasitic pitch variations in archival musical recordings

A new method for reducing parasitic pitch variations in archival audio recordings is presented. The method is intended for analyzing movie soundtracks recorded in optical films. It utilizes image processing for calculating and reducing effects of tape shrinkage being one of the main reasons for parasitic pitch variations in audio accompanying moving images. As long as the film tape characteristics are known the new method can be easily tuned to analyze archival recordings. The new method is also compared to some previous approaches to pitch variation correction.

[1]  Bernard Besserer,et al.  Restoration of Variable Area Soundtracks , 2007, 2007 IEEE International Conference on Image Processing.

[2]  Patrick J. Wolfe,et al.  Correction of Wow and Flutter Effects in Analog Tape Transfers , 2004 .

[3]  Simon J. Godsill,et al.  The restoration of pitch variation defects in gramophone recordings , 1993, Proceedings of IEEE Workshop on Applications of Signal Processing to Audio and Acoustics.

[4]  Piotr Pastuszak.  MTS pilot tone tracking for "wow" distortion determination , 2008 .

[5]  P. Maziewski.  Wow defect reduction based on interpolation techniques , 2006 .

[6]  Jerry C. Whitaker,et al.  Standard Handbook of Audio and Radio Engineering , 2001 .

[7]  P. Read,et al.  Restoration of Motion Picture Film , 2000 .

[8]  Peter J. W. Rayner,et al.  Digital Audio Restoration: A Statistical Model Based Approach , 1998 .

[9]  Eric D. Daniel,et al.  Magnetic recording : the first 100 years , 1999 .

[10]  Simon J. Godsill,et al.  The restoration of degraded audio signals , 1993 .

[11]  Andrzej Czyzewski,et al.  DSP Techniques for Determining "Wow" Distortion* , 2007 .

[12]  James Nichols.  An Interactive Pitch Defect Correction System For Archival Audio , 2001 .

[13]  John Eargle,et al.  Analog Tape Recording , 1992 .

[14]  V. Fadeyev,et al.  A novel application of high energy physics technology to the problem of audio preservation , 2004 .

[15]  Simon J. Godsill.  Recursive restoration of pitch variation defects in musical recordings , 1994, Proceedings of ICASSP '94. IEEE International Conference on Acoustics, Speech and Signal Processing.

[16]  Andrzej Czyzewski,et al.  Drift, Wow and Flutter Measurement and Reduction in Shrunken Movie Soundtracks , 2008 .

[17]  Patrick J. Wolfe,et al.  Nonuniform Sampling Theory in Audio Signal Processing , 2004 .

[18]  Przemyslaw Maziewski.  Modulation frequency constraints on wow and flutter determination , 2008 .